Stellite 6 Powder

Overview

Stellite 6 Powder is a versatile, high-performance alloy powder renowned for its excellent wear, corrosion, and heat resistance. Composed primarily of cobalt with added chromium, tungsten, and carbon, Stellite 6 is frequently applied in industries where durability and strength are critical, such as aerospace, automotive, oil & gas, and manufacturing. This guide explores the ins and outs of Stellite 6 Powder, including key specifications, models, applications, and a detailed comparison with other alloys.

Composition of Stellite 6 Powder

Stellite 6 is a cobalt-based alloy powder that combines high amounts of chromium, carbon, and tungsten. This unique combination provides the alloy with excellent resistance to wear, corrosion, and high temperatures, making it highly sought after in extreme operating environments. Let’s break down the composition and how each element contributes to its performance.

ElementPercentage CompositionRole in Stellite 6 Powder
Cobalt (Co)50-60%Base metal, provides high strength, toughness, and temperature stability.
Chromium (Cr)25-30%Enhances corrosion resistance, hardness, and oxidation resistance.
Tungsten (W)4-5%Adds wear resistance and increases hardness.
Carbon (C)1-2%Contributes to hardness and wear resistance through carbide formation.
Stellite 6 Powder

Characteristics of Stellite 6 Powder

The unique composition of Stellite 6 Powder gives it remarkable properties, especially for high-temperature and abrasive environments. Let’s dive into the characteristics that make it stand out:

  1. Wear Resistance: Due to its high tungsten and carbon content, Stellite 6 forms hard carbides that provide wear resistance. It can withstand abrasive and erosive wear, extending the lifespan of components.
  2. Corrosion Resistance: The presence of chromium protects against corrosion, making Stellite 6 suitable for applications in harsh chemical and saltwater environments.
  3. Thermal Stability: Cobalt is known for its excellent high-temperature stability, allowing Stellite 6 Powder to maintain strength and hardness even at elevated temperatures.
  4. Hardness: Stellite 6 typically offers a hardness of 40-46 HRC (Rockwell Hardness), which further enhances its wear-resistant qualities.

Top Models of Stellite 6 Powder

Various Stellite 6 models are tailored to specific industrial applications. Below are some popular Stellite 6 powder options, each with unique properties suited to different uses:

ModelKey FeaturesIdeal Applications
Stellite 6BSuperior wear resistance, ideal hardnessPumps, valves, cutters, bearing surfaces
Stellite 6CEnhanced corrosion and impact resistanceHigh-impact machinery, marine equipment
Stellite 6B-GSHigh wear resistance with granular structureSpraying applications, wear-resistant coatings
Stellite 6MHigher thermal stabilityHigh-temperature tools, gas turbines, industrial blades
Stellite 6ABalanced wear and impact resistanceGeneral purpose for automotive and aerospace components
Stellite 6B-CFCored wire format for easy applicationWeld overlay, protective coatings
Stellite 706Enhanced hardness, extreme environmentsHard-facing, heavy machinery parts
Stellite 720Improved erosion resistanceSand-blasting machinery, erosion-prone equipment
Stellite 6LCLower carbon for more ductilityThin parts requiring flexibility and impact resistance
Stellite 6VSHigh hardness, vacuum meltingAerospace, vacuum-sensitive environments

Applications of Stellite 6 Powder

Stellite 6 Powder is highly regarded in a variety of industries due to its robustness. Below is a table summarizing the key applications across different sectors.

IndustryApplicationsReasons for Use
AerospaceTurbine blades, engine componentsHigh-temperature and wear resistance
AutomotiveValves, camshafts, rocker armsHigh wear resistance and durability
Oil & GasDrill bits, valve seats, sealsCorrosion resistance in abrasive environments
MedicalSurgical instruments, dental toolsCorrosion-resistant and biocompatible
Power GenerationBoiler components, wear-resistant partsTemperature stability, long wear life
ManufacturingCutting tools, dies, moldsExtreme durability and abrasion resistance

Specifications of Stellite 6 Powder Models

The specifications of Stellite 6 Powder models vary based on intended use and format. Here are some key specifications to consider when choosing the right model:

SpecificationStellite 6BStellite 6CStellite 6MStellite 6A
Hardness (HRC)40-4644-4738-4440-45
Density (g/cm³)8.48.38.58.4
Melting Point (°C)1260-13501250-13401255-13451258-1352
Coating Thickness0.5-3 mm0.5-4 mm0.3-2.5 mm0.4-3 mm

Suppliers and Pricing

Here are some well-known suppliers of Stellite 6 Powder, along with pricing ranges (as of the latest data). Note that prices may vary based on order volume, location, and specific requirements.

SupplierLocationPrice Range (per kg)
KennametalUSA, Worldwide$150 – $300
H.C. StarckGermany, USA$200 – $350
Deloro StelliteUSA, Europe$180 – $330
Oerlikon MetcoGlobal$170 – $320
Praxair Surface TechNorth America$160 – $310

Comparing Stellite 6 Powder with Other Alloys

Stellite 6 Powder often goes head-to-head with alloys like Hastelloy, Inconel, and Tungsten Carbide. Here’s a comparative look at their advantages and disadvantages.

AlloyAdvantagesDisadvantages
Stellite 6Excellent wear, heat, and corrosion resistanceHigher cost, more specialized
HastelloySuperior corrosion resistanceNot as wear-resistant, limited temperature stability
InconelHigh temperature and corrosion resistanceLower wear resistance than Stellite
Tungsten CarbideExtreme hardness and wear resistanceBrittleness, less corrosion-resistant
Stellite 6 Powder

FAQ

QuestionAnswer
What is Stellite 6 Powder used for?Stellite 6 Powder is used in applications requiring high wear, corrosion, and heat resistance, including cutting tools, valve seats, and turbine parts.
How hard is Stellite 6?Stellite 6 typically has a hardness between 40-46 HRC, which gives it excellent wear resistance.
Is Stellite 6 Powder expensive?Yes, it is generally more expensive than basic alloys due to its specialized properties, but it offers great value for demanding applications.
What industries use Stellite 6?Industries like aerospace, automotive, oil & gas, power generation, and medical rely heavily on Stellite 6 for its durability and resistance.
How does Stellite 6 compare to Inconel?While both alloys offer heat and corrosion resistance, Stellite 6 excels in wear resistance, making it suitable for high-abrasion environments.

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